assertEquals("111", paramMap.get("aaa"));
        assertEquals("222", paramMap.get("aaa_bbb"));
        assertEquals("222", paramMap.get("aaaBbb"));
        assertEquals("222", paramMap.get("AaaBbb"));
        assertNull(paramMap.get("aaabbb"));
        assertEquals("333", paramMap.get("aaa_bbb_ccc"));
        assertEquals("333", paramMap.get("aaaBbbCcc"));
        assertEquals("333", paramMap.get("AaaBbbCcc"));

        assertNull(StringUtil.decamelize(null));
        assertEquals("EMP", StringUtil.decamelize("Emp"));
        assertEquals("AAA_BBB", StringUtil.decamelize("aaaBbb"));
        assertEquals("AAA_BBB", StringUtil.decamelize("AaaBbb"));
        assertEquals("AAA_BBB_C", StringUtil.decamelize("aaaBbbC"));
        assertEquals("USER_ID", StringUtil.decamelize("UserId"));
    }

    /**
     * @throws Exception
     */
    @Test

	{"TrimRight", "abba", "", "abba"},
	{"TrimRight", "", "123", ""},
	{"TrimRight", "", "", ""},
	{"TrimRight", "☺\xc0", "☺", "☺\xc0"},
	{"TrimPrefix", "aabb", "a", "abb"},
	{"TrimPrefix", "aabb", "b", "aabb"},
	{"TrimSuffix", "aabb", "a", "aabb"},
	{"TrimSuffix", "aabb", "b", "aab"},
}

type TrimNilTest struct {
	f   string
	in  []byte
	arg string
	out []byte
}